/*
 * Copyright 2000-2017 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.intellij.stats.completion

class DeferredLog {
    companion object {
        private val DO_NOTHING: () -> Unit = { }
    }

    private var lastAction: () -> Unit = DO_NOTHING

    fun clear() {
        lastAction = DO_NOTHING
    }

    fun defer(action: () -> Unit) {
        lastAction = action
    }

    fun log() {
        lastAction()
        clear()
    }
}